Ski having metal edgings



June 10, 1941.. l l. BEERLI 2,245,319

SKI HAVING METAL EDGINGS Filed Aug. 28, 1939 x v .1,1111 ne Patented .lune 10, 194i 'man Application August 28, 1939, Serial No. 292,361 in Switzerland September 1, 1938 Claims.

This invention relates to skis having metal edgings which are not subdivided. In such skis the edgings must be arranged so as to be extensible in the longitudinal direction in order that the skis will not be stiffened. This requirement has been satisfied in skis having metal edgings of known kinds, for example, only by providing recesses in the ski of such depth and shape that either the strength of the ski proper or of that of the parts holding the metal edgings was impaired.

This drawback is eliminated in the ski having metal edgings, according to this invention, by arranging at the outer edge of each margin of the tread surface of the ski a metal rail in a recess of said surface so that between one of the flanks of this rail and the adjacent side surface of the recess a groove is formed in which at least one holding member is arranged which is adapted to hold the metal rail so as to provide extensibility for this rail in the longitudinal direction thereof.

In this way a strong connection is obtained between the edge of the ski and the metal rail by means of a recess of simple form which can thus be readily effected by milling, and in which the rail is longitudinally movable.

Advantageously, the metal rail is provided with a web which bears against the bottom surface of the recess and is provided with apertures into which projections on the holding member or members engage with clearance.

Preferably the holding members are in the form of plates and are provided with a covering layer which overlies the joints and the fastening means of the plates. By means of this covering layer the tread surface of the ski can be rendered completely smooth. v

In the accompanying drawing two embodiments of the invention are illustrated by way of example only, in which Fig. 1 is a cross-section of the first embodiment;

Fig. 2 shows a part-longitudinal section of this embodiment on the line II-II in Fig. 1;

Fig. 3 shows a cross-section of a metal rail;

Fig. 4 is an elevational view of this metal rail;

Fig. 5 is a sectional view of a second-embodiment;

Fig. 5a is a sectional view of another embodiment;

Fig. 6 is a section on the line VI-VI in Fig. 5;

Fig. 'l is a longitudinal sectional view of a ski (Cl. 28d-11.13)

Fig. 11 is a cross-sectional view similar to Fig. 9 of another embodiment;

Fig. 12 is a cross-sectional view of a further embodiment in connection with a ski of old art,

and

Fig. 13 is a side elevation of the embodiment of Fig. 12 as seen from the leit hand side of Fig. 12.

In the embodiment of the invention shown in Figs, 1 to 4, the ski l is p-rovided on the outer edge of each margin of the tread surface with a milled recess 2. A metal, rail 3 having a body portion of substantially square cross-section is provided with a laterally extending flange 4 which is provided at regularly spaced points with rectangular apertures 5 (Fig. 4). Holding members in the form of plates 'l are provided with raised portions 6 which engage into the apertures 5 and are secured to the ski I by screws. Ihe holding plates 1 are of such width and height that they iill out the groove formed between the inner flank of the metal rail 3 and the side surface of the recess 2. The raised portions 6 and the apertures 5 are of such relative sizes that between them clearance exists particularly in the longitudinal direction of the rail, which clearance permits of longitudinal extension, that is, elongation and contraction of the metal rail 3 in adaptation to corresponding deflections of the ski.

The embodiment shown in Figs. 5 and 6 diiiers from that shown in Figs. 1 and 2 by the feature showing a modification of the embodiment of embodiment;

Fig. 10 is a section on the line X-X 1n Fig. 9;

that the holding plates 1' are narrower and of lesser height. A covering layer 9 is applied to the holding plates 1 which layer may, for example, consist of cellulose material which is pressed into the groove between the rail 3 and the recess. By

this means the material of this covering layer also penetrates partly into the passages formed on both sides of the plates 'l' which are narrowed toward the inner side due to the presence of undercut projections I0 on the side surfaces of the plates l. The covering layer 9 is thus securely retained within the groove.

With a view to obtaining'a still stronger connection between the covering layer 9 and the holding plates l the outer side of the latter may be additionally provided with pockets 'la for the reception of portions of the compressed material of the covering layer 9 as is shown in Fig. 5a. The joints between the individual plates 1' as well as the screws 8 are covered by the covering layer 9 so that this embodiment provides for a smooth tread surface.

Instead of making the holding plates 'l or l in only relatively short lengths and providing each plate only with one raised portion 6 longer holding plates 1" may be used, as shown in Fig. '7, each of which is provided with several raised portions 6. Such longer plates require to be made of elastic material, whereas shorter plates can be made of stiif material. Alternatively, only a single holding plate of elastic material of the same length as the metal rail may be provided.

Furthermore, the holding plates 'I or 'l' may be made without a raised portion 6, as shown at 1 in Fig. 8. In connection therewith, in the apertures 5 in the web 4 individual spacer plates or Washers I l having a shape similar to the portions 6 may be inserted.

Moreover, as shown in Figs. 9 and 10 representing a further embodiment, having rail-like holding members IB receiving a plurality of fastening screws 8 and bearing against the web ll by means of two bearing ribs I6 and having overlapping joints i6, the apertures l2 may be only of a width equal to that of the shank of the screws 8, so that the screw shank then functions as a guide for the rail 3. In order to provide for elastic adjusting movements of the rail 3 also in this embodiment the screws 8 which at first had been tightened are subsequently loosened to a slight extent again.

In the embodiment shown in Fig. 1l, the inner side of the body portion of the rail 3 is provided with a longitudinal groove I3 into which the material of the covering layer on the holding members l1 intrudes,

In the embodiment shown in Figs. l2 and 13, the invention is exemplified in connection with a ski of the prior art having an edge rail I4 con J ing position. Holding plates 1 of the kind shown in Figs. l and 2 are used for holding the rail 3, having appropriate apertures 5, in place on the ski.

What I claim is:

l. In a ski having metal edgings, a metal rail providing an edging of the ski, said ski having a recess formed in each margin of its tread surface, an apertured flange on said rail, said rail being arranged in said recess at the outer edge thereof whereby a groove is left between the inner flank of said rail and the adjacent side surface of said recess, said flange bearing against the bottom of said recess, at least one holding member arranged in saidgroove, and a bearing portion provided on said member for engagement with the bottom of said recess and projecting through a mating aperture in said ilange with clearance in the longitudinal direction of said rail for said member to hold said rail for compensation of extension of said rail longitudinally of the ski in adaptation to corresponding deflections of the ski.

2. In a ski having metal edgings, a metal rail providing an edging of the ski, said ski having a recess formed in each margin of its tread surface, an apertured flange on said rail, seid rail being arranged in said recess at the outer edge thereof whereby a groove is left between the inner flank of said rail and the adjacent side surface lof said recess, said flange bearing against the bottom of said recess, at least one holding plate arranged in said groove and lling the same between said rail and said side surface of said recess, and a bearing portion provided on seid plate for engagement with the bottom of said recess and projecting through a mating aperture in said flange with clearance in the longitudinal direction of said rail for said plate to hold said rail for compensation of extension of said rail longitudinally of the ski in adaptation to corresponding deflections of the ski.

3. In a ski having metal edgings, a metal rail providing an edging of the ski, said ski having a recess formed in each margin of its tread surface, an apertured flange on said rail, said rail being arranged in said recess at the outer edge thereof so as to leave a groove between the inner flank of said rail and the adjacent side surface of said recess, said flange bearing against the upper limiting surface of said recess, at least one holding plate arranged in said groove, the height of said plate being less than that of said groove, a covering layer lying beneath said plate and forming a bottom smooth tread finish for said groove, and a bearing portion provided on said plate for engagement with the upper limiting surface of said recess and projecting through a mating aperture in said flange with clearance in the longitudinal direction of said rail for said plate to hold said rail for compensation of extension of said rail longitudinally of the ski in adaptation to corresponding deflections of the ski.

4. In a ski having metal edgings, a metal rail providing an edging of the ski, said ski having a recess formed in each margin of its tread surface, an apertiu'ed flange on said rail, said rail being arranged in said recess at the outer edge thereof so as to leave a groove between the inner flank of said rail and the adjacent side surface of said recess and said flange bearing against the upper limiting surface of said recess, at least one holding plate arranged in said groove, the height of said plate being less than that of said groove, and the width of said plate being less than that of said groove thereby forming a passage between said plate and said rail and one between said plate and said side surface of said recess, a covering layer overlying said plate and intruding into said passages and forming a bottom smooth tread finish for said groove, and a plate portion engaging rmly with the upper surface of the recess through an aperture in said flange with longitudinal clearance for said plate to hold said rail for compensation of extension of said rail longitudinally of the ski in adaptation to corresponding deflections of the ski.

5. In a ski having metal edgings, a metal rail providing an edging of the ski, said ski having a recess formed in each margin of its tread surface, an apertured flange on said rail, said rail being arranged in said recess at the outer edge thereof so as to leave a groove between the inner flank of said rail and the adjacent side surface of said recess, and said flange bearing against the upper limiting face of said recess, at least one holding plate arranged in said groove, the height of said plate being less than that of said groove, and the bottom of said plate having pockets, a covering layer lying beneath said plate and intruding into said pockets and forming a bottom smooth tread finish for said groove, and a bearing portion provided on said plate for engagement with the upper face of said recess and projecting through a mating aperture in said flange with clearance in the longitudinal direction of said rail for said plate to hold said rail for compensation of extension of said rail longitudinally of the ski in adaptation to corresponding deilections of the ski.

LOUIS BEERLI. 

